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Segment and Revenue by Geography and by Major Customer - Summary of Geographic Revenues (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Geographic Areas Revenues From External Customers [Line Items]
Revenues	$ 70,684	$ 56,910	$ 60,041
Israel
Geographic Areas Revenues From External Customers [Line Items]
Revenues	1,670	1,028	1,470
China
Geographic Areas Revenues From External Customers [Line Items]
Revenues	15,574	11,989	7,268
Hong Kong
Geographic Areas Revenues From External Customers [Line Items]
Revenues	13,964	9,780	11,267
United States
Geographic Areas Revenues From External Customers [Line Items]
Revenues	10,842	7,969	12,189
Mexico
Geographic Areas Revenues From External Customers [Line Items]
Revenues	2,381	7,708	9,065
Japan
Geographic Areas Revenues From External Customers [Line Items]
Revenues	7,669	6,802	8,895
Other
Geographic Areas Revenues From External Customers [Line Items]
Revenues	$ 18,584	$ 11,634	$ 9,887

X

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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